Netgear R6250 router not port forwarding

I'm attempting to forward port 9000 (custom SSH port) to one of my machines. I've set up a static local IP address and a port forwarding rule in the router settings, but I'm just getting "connection timed out" every time.

I can login to SSH on the local network so I know that's fine. I've rebooted the router and the machine multiple times, but to no avail. Does anyone have a suggestion?

Another thing that might be important is the way inteet is provided to my apartment. I live in a complex where they have a huge bulk account with TWC, and they maintain all the modems (I guess) somewhere else in the building. There is an etheet drop in my apartment where I have my router set up. I don't quite know enough about networking, but is it possible/likely that they have it set up in a way that would leave me unable to use port forwarding?

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